US2746367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamping machine
Assignee: EDNA G FERGUSON
•
Filing: 1951-09-27
•
Granted: 1956-05-22
•
Expires: 1971-09-27
Abstract
No abstract record available.
Inventors
- 👤 William T Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:32
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/02; E04G21/06; E04G21/063; E04G21/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US681715A
Cited
FR43763E
Cited
DE636389C
Cited
US2254744A
Cited
US2248247A
Cited
US2306089A
Cited
US2542979A
Cited
US2474937A
Cited
US2633782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |